Faintiness/ unable to focus

Brittany • Hey everyone feel free to add my Snapchat I’m going to make a private group discussing my journey ttc #2 King08britt

I was on the phone with my daughter and as soon as I hung up I got this heavy lightheadedness so I laid down it was almost like the room was moving and I couldn’t focus. I’m 28 weeks and 3 days and honestly it scared me what should I do?